docstr: Sleep a fixed amount of time between each retry.
docstr_tok: ["Sleep","a","fixed","amount","of","time","between","each","retry","."]
code: def fixed_sleep(
      self, previous_attempt_number, delay_since_first_attempt_ms
  ):
      """Sleep a fixed amount of time between each retry."""
      return self._wait_fixed
  
imports: import random
  import six
  import sys
  import time
  import traceback
label_desc: Use image node_id 5 for calling the Retrying obj's underlying member method code with example usage: obj.fixed_sleep(previous_attempt_number, delay_since_first_attempt_ms) and returns: self